Analysis About SSVEP Response to 5.5–86.0 Hz Flicker Stimulation

Abstract

This paper introduces an analysis about the Steady State Visual Evoked Potential (SSVEP) present in electroencefalogram (EEG) signals. This analysis was performed under some features. Firstly, the flickering stimuli varied along the 5.5–86.0 Hz range, and two types of settings were used, a monopolar and a bipolar. The analysis outputs were SSVEP amplitude response and its signal-to-noise ratio (SNR). These features were discriminated according to the three frequency ranges: low, medium and high frequency. Moreover, a subjective discomfort evaluation was performed through a questionnaire, which was answered by the 20 participating volunteers. Finally, it is shown that this study is in accordance with the literature statements about the SSVEP’s power and SNR behavior regarding the oscillating stimuli frequencies.